That is all for tonight. A great day of FA Cup football. Join us tomorrow for Swansea v Arsenal at 1330GMT. See you then.

That is all for tonight. A great day of FA Cup football. Join us tomorrow for Swansea v Arsenal at 1330GMT. See you then.

What a finish. West Ham looked to have won it as they defended for their lives in the game's closing stages, only for that man Van Persie to strike and secure a replay for his side.

90'

And there goes the full-time whistle. A replay at Old Trafford then.

90'

Carlton Cole clears Giggs' corner. It soon comes to Valencia but he can only blaze over.

90'

Buttner wins a corner off Collins.

90'

United are searching for a winner...

90'

Kagawa sends a ball across the area but fails to find a team-mate. Could have taken the shot on himself.

90'

Four minutes of injury time to be played.

90'

Giggs makes up for his earlier miss as he picks out Van Persie with a superb cross-field ball. The striker brings it down with a great touch before slotting past Jaaskelainen. Top goal.

90'

GOAL FOR UNITED. VAN PERSIE.

90'

A real chance for United. Rafael picks out Giggs with a delightful ball but the midfielder can only head over. He should have hit the back of the net and Sir Alex Ferguson knows it.

89'

West Ham are doing very well to keep hold of the ball now. United are getting frustrated.

88'

West Ham break down the other end. Jarvis picks out Taylor who heads the ball across the face of goal. Nolan miskicks it while Carlton Cole gets a touch on it but can only send it just wide of the post.

87'

Valencia gets another cross into the box but West Ham head clear.

87'

United look short of ideas...

86'

Valencia makes his way down the right before sending a cross in but it is poor and goes out for the goal kick.

84'

Noble's free-kick is cleared as far as Collison on the edge of the box but he shoots well over. Should have done better.

83'

Vidic gets booked for a foul on Jarvis. The West Ham man did very well to win the free-kick in the corner for his side.

83'

Time is starting to tick for United and at the moment they do not really look like scoring.

82'

Taylor drills in a cross from the left but it is easy for De Gea to deal with.

81'

West Ham get it clear but only as far as Giggs who picks out Vidic. The United skipper heads it wide however.

81'

Demel concedes another corner with a poor header.

80'

Kagawa and Valencia combine. United win the corner.

78'

West Ham bring off Joe Cole, who receives a standing ovation. Taylor comes on in his place.

78'

United make another change as Giggs comes on for Smalling.

77'

The Upton Park faithful are starting to get a little nervous.

77'

United seeing all the ball at the moment but they cannot find a way past the wall that is West Ham's defence.

76'

Potts tries to send a ball into the box but Smalling is there to clear.

75'

Ryan Giggs looks like he might be making an appearance soon.

74'

West Ham are having to soak up a lot of United pressure at the moment. So far so good for the home side.

73'

West Ham make a change. Noble comes on for Diarra.

72'

A real chance for United as Buttner stands a cross into the box but Welbeck can only head over the bar from close range. Should have at least hit the target.

71'

Potts gets forward down the left for West Ham but he cannot keep control of the ball and it goes out for the goal kick.

70'

United probing West Ham's defence but having little luck getting past them.

69'

Van Persie nearly scores with his first touch but he can only send his header from Buttner's corner wide.

68'

Van Persie comes on for Hernandez for United, while Valencia replaces Scholes.

67'

Rafael tries to play in Welbeck with the pass but Demel makes an excellent interception.

66'

Joe Cole has had to have some treatment for a nose bleed. He is OK to play on now.

65'

United preparing some substitutions it seems.

64'

Scholes tries to play a cross-field ball to Smalling but it goes out for a goal kick.

64'

Remember, United have Van Persie on the bench to call upon.

63'

What have United got in response now? They have seen plenty of the ball in this half but have lacked any real penetration.

62'

So United fall behind for the first time in the game. Are they going to come back once again?

60'

That is where West Ham have been most dangerous today, when Joe Cole has been sending balls into the box. United have struggled with his deliveries all game.

59'

59'

Nearly identical to the first goal. Joe Cole with a fine delivery into the box and Collins heads home leaving De Gea with no chance.

59'

GOAL FOR WEST HAM. COLLINS.

59'

Smalling heads clear Collion's corner.

59'

West Ham win a corner...

58'

The game is starting to become a little more stretched now.

58'

United break down the other end through Kagawa but his shot is blocked by Tomkins.

57'

Joe Cole gets to the byline and sends in a fine cross to Carlton Cole who brings out a great save from De Gea to deny his header. That is better from the Hammers.

56'

Remember, the draw for the next round of the FA Cup is tomorrow at 1530GMT.

55'

Collison has taken a ball to the face from Rafael and is in a bit of pain currently.

55'

West Ham need to get hold of the ball and test the United defence like they were doing in the first half.

54'

Cleverley tries to pick out Welbeck with a pass but it is poor, leaving the striker with no chance of getting on the end of it.

53'

United enjoying a healthy spell of possession at the moment...

52'

Smalling gets a cross in from the right but Potts clears. Smalling soon sends another ball into the box but Welbeck is unable to bring it under control.

51'

United patiently knocking the ball around at the moment.

50'

Demel sends a ball in from the right. Tomkins gets his head on it but it is easy for De Gea to claim.

48'

Welbeck does well to play in Rafael down the right. The Brazilian tees up Cleverley on the edge of the box but he sends it over the bar. That was a real chance there.

47'

United play it around the box before Rafael takes aim from the edge of the box but it canons straight back off a defender.

46'

Joe Cole has an early effort at goal from distance but he sends it well over.

46'

And West Ham get the second half underway...

James Collins celebrates his equaliser.

United, who have seen most of the ball, took an early lead before West Ham, who have looked increasingly dangerous as the game has gone on, clawed the scores level. The game is finely poised for an exciting second half. Could go either way.

45'

And there goes the half-time whistle.

45'

Joe Cole fizzes a great ball into the box but Vidic gets a vital header in to clear the danger.

45'

West Ham are knocking the ball around nicely now.

45'

Two minutes of injury time to be played.

45'

Rafael takes a tumble on the edge of the box but the free-kick has strangely gone the other way.

44'

Both sides' performance levels seemed to have dropped a little over the last five minutes or so.

44'

Vaz Te sends another effort well over the bar. This time on the volley from just inside the area.

42'

The game is stopped as Vaz Te puts his boot back on!

40'

Vaz Te picks up the ball on the edge of the box and takes aim but his effort flies well over the bar.

40'

But Welbeck heads clear Joe Cole's delivery.

40'

West Ham win another free-kick just outside the box...

39'

Cleverley bursts forward down the left but is unable to get a cross in. West Ham break through Carlton Cole but Evans slides in with a tackle to avert the danger.

38'

Collison goes into the book for a late challenge on Rafael.

36'

United scramble the corner clear and break through Welbeck who bears down on goal and brings out a save from Jaaskelainen. Hernandez was screaming for the pass there.

35'

West Ham win another corner...

34'

Welbeck tees up Hernandez on the edge of the box but the Mexican blazes his strike well over the bar.

33'

Joe Cole's deliveries have been a constant thorn in United's side so far.

33'

Joe Cole sends the free-kick in but this time Collins fails to get his header on target.

32'

West Ham win another free-kick in a dangerous position. United need to stop giving them away.

31'

Demel sends a ball into the box from the right and Nolan appears to take a tumble under pressure from Vidic. No penalty given.

31'

Joe Cole fires in another dangerous ball but Evans does well to head clear.

30'

We have a real game on our hands now. United seeing most of the possession but West Ham looking dangerous whenever they attack.

29'

The Hammers fans are really getting behind their side now.

29'

Diarra dispossesses Kagawa before firing an effort at goal but it was always rising.

28'

Joe Cole sends in another ball into the box and Collins rises highest to head home past De Gea who was rooted to the spot. Great delivery from Cole.

28'

GOAL FOR WEST HAM. COLLINS.

27'

Joe Cole sends it into the box but Vidic heads it clear.

27'

27'

West Ham win another free-kick...

26'

West Ham are definitely creating a few chances. United do not look too solid at the back.

25'

Joe Cole sends the free-kick into the box but Vaz Te cannot get enough power on his header to trouble De Gea.

24'

Scholes goes into the book for a cheap foul on Collison just outside the area. Free-kick to West Ham in a dangerous position.

23'

A lovely counter attack from United as Hernandez sends a peach of a ball across the face of goal from the right and Cleverley arrives to calmly slot past Jaaskelainen. Great finish.

23'

GOAL FOR UNITED. CLEVERLEY.

22'

United clear the corner but Vaz Te sends the ball back into the box. Carlton Cole sends it to Nolan but the midfielder is in an offside position.

21'

Joe Cole shoots from distance but it hits Evans. Demel goes on to win the corner off Buttner.

20'

United have a header cleared off the line this time as Potts clears Vidic's header following a corner into the box.

19'

Buttner lofts the ball into the box and Demel concedes a cheap corner when it was already going out for a goal kick.

19'

United win a free-kick in a dangerous position...

17'

17'

United scramble a West Ham ball into the box away to safety. The Hammers have been causing their opponents a few problems when they have gone forward.

16'

Welbeck has the ball in the back of the net but it is disallowed after Hernandez was ruled offside.

15'

United fail to deal with a long ball forward from Collins and Nolan nearly takes advantage but can only stab wide.

14'

David Beckham is watching on in the crowd.

13'

Collison picks the ball up in United's half and drives at goal before firing well over the bar.

13'

West Ham starting to impose themselves on the game now...

12'

West Ham inches away from scoring. Diarra sees his header cleared off the line by Scholes before Vidic heads clear with Carlton Cole breathing down his neck.

11'

Demel does well to get forward down the right but his cross is just too long for Carlton Cole in the middle. West Ham soon win a corner.

10'

West Ham could really do with a sustained spell of possession. Every time they get hold of it they soon lose the ball.

9'

A chance for United as Smalling pulls the ball across the face of goal but Hernandez is just unable to make contact.

8'

Demel does well to intercept Kagawa's through ball and now West Ham have the ball.

7'

Nolan tries to force his way through the United defence but Evans is there to avert the danger.

6'

Rafael makes a run down the right but Joe Cole is there to get the tackle in.

5'

West Ham are really struggling to get hold of the ball at the moment. It is all United.

4'

Carlton Cole tries to latch onto a long ball over the top but Vidic uses his strength to get in the way and knock the ball back to De Gea.

3'

United are pegging back West Ham in their own half already.

3'

Rafael is playing in an advanced right midfield role, with Smalling playing behind him at right back.

2'

Cleverley tries to slip in Hernandez but he just overhits it and Jaaskelainen comes out to smother the ball.

1'

United playing it around patiently at the moment.

1'

And United get the first half underway...

The teams are out onto the pitch. We are just moments from kick-off...